"You don't seduce the Joker through his cock. You do it through his ego." I second that.

I really enjoyed this fic. It's really well-written, and the characterisation is spot-on (no surprises there). I really liked the flow of the fic. Harley really does know how to push Joker's buttons, and I just love the fact that she manipulated him to get what she wanted from him.

I saw The Dark Knight twice already! :D It was beyond phenomenal and intriguing! I'll be writing a review a little later tonight about my thoughts on this experiential film. ;) One thing I do want you to know after having seen that film and reading this fic, is that while I was reading Quick Learner I pictured Ledger's Joker with a dash of Hamill. But Ledger just stuck. It was fascinating! :-D

Idea:

The idea of Harley seducing the Joker is not only amusing, euphoric, intriguing and HAWT (as you would say ;)), it's something I feel needed to be explored. And explored right. With your extensive knowledge and understanding of the characters, you managed to pull this off fabulously. I'm not sure if anyone would or could have done a better job. Marvelous!

Characterization:

Perfect to a T! While reading this, I could hear Mark Hamill and Arleen Sorkin's voices coming out of the text on the page. I can see Joker putting down his book to put his arms around Harley after her making the point of him being more intelligent than her. Perfect ego trip! It's like a drug and he feeds off of it. ;)

Structure:

Lovely transition into grasping Joker's attention and keeping it constantly on Harley.

“Well, I had to quit after awhile anyhow because I just couldn’t figure it. I’m not brilliant like you are.” She coos and he makes a sort of wiggle, lifts his chin a little. She’s said what he thinks and he’s placated by it.

“I can’t even imagine what it must be like to be as smart as you.” She purrs into his ear yet careful to keep her voice disingenuous, and feels his face shift as the first glimmer of a smile slides up it. Her heart leaps. How she loves to make him smile! “It dazzles me, ya know.”

“Well, that’s only to be expected,” he sniffs, and joy of joys, he lifts a hand from the book and wraps it around hers, where are they linked together on his chest. “You haven’t got the slightest idea what I’ve got planned, have you?”

In addition to clamping his attention, you are amazing with character movements, habits, and symbol sounds. It's not just dialogs. "Joker smiles, Joker frowns, Joker yells... .etc."

and feels his face shift as the first glimmer of a smile slides up it.

...is a perfect example of this! ;)

The way you used the Almost Got 'Im story with Catwoman as a rope to pull him deeper and deeper under her grasp was something I could visualize Joker being excited about and wanting to hear more about. Anything having to do with Batman and the ones he loves and cares about and those loved ones being hurt is something that we all know Joker relishes in.

Critiques, Advice...Etc:

I know this is going to sound kinda lame...But I can't find one single thing that could have been done better. You did such a fabulous job. :) Spellings great. Grammars fine. ;)